252 SIXTH REPORT — 1836. 



the properties of fluids. It is even possible that the present 

 inquiries i*especting the nature of the imponderable agents, which 

 have given rise to such long-continued and widely extended 

 experiments, may be waiting to receive satisfactory answers 

 until greater perfection shall be given to the application of ma- 

 thematics to the determination of the laws of fluid motion and 

 pressure. 



